4-20ma 24V 4 wire question

#1

Hello

First of all I am much more of a software guy than an electronics/hardware guy, so my questions are probably very basic but I must say that I am slightly lost.

I am tasked with interfacing a Partcile counter to an MKR arduino (making 3 version 1 wifi, 1 GSM and one Lora)

The particle counter has a 4-20ma 4 wire interface wired as follows

To drive the counter I need to be able to respect certain timings to tell the counter to start it’s duty cycle and send the results as follows

From what I saw in the NCD product catalog, I could only find 2-wire 4-20 ma boards, amd I right or am I misreading the whole stuff ?

Thanks in advance

Didier